Y55G Field Controller – Compact GNSS RTK Controller with Built-in Precision

The Y55G field controller is a modern geodetic controller with an integrated GNSS RTK receiver. It features a multi-frequency 1408-channel board supporting L1, L2, and L5 bands. The device supports all major satellite systems: GPS, GLONASS, BeiDou, Galileo, QZSS, and IRNSS, ensuring stable positioning even in challenging environments.

The controller runs on the Android 10 operating system, offering a user-friendly and intuitive interface.

Package Contents

• Y55G Field Controller

• Power adapter
• USB Type-C cable

• Permanent license for SurPad 4.2 or geometer SCOUT (if selected in the kit)

Compact All-in-One RTK Accuracy Solution

The Y55G field controller is a unique all-in-one solution that combines a 5.5-inch touchscreen, a physical keyboard, and a built-in RTK GNSS module in a single device. With built-in support for NTRIP corrections, it enables centimeter-level accuracy without the need for an external receiver or pole. Everything is integrated into one compact unit – a true portable RTK solution that saves time, weight, and effort in the field.

Ideal for a Wide Range of Applications

This form factor makes the Y55G controller especially valuable in agriculture – for precise field boundary mapping, cultivation planning, or fertilizer application. It is also convenient for forestry tasks such as plantation inventory, tree marking, and resource tracking. Additional applications include:

• Mapping and infrastructure monitoring

• Urban planning and cadastral work

• Environmental studies

• Construction and volume control

The Y55G is a tool that allows for accurate GNSS measurements without bulky equipment, offering mobility, autonomy, and professional precision in one device.

High-Quality Display and Keyboard

The Y55G is equipped with a bright 5.5-inch TFT display with a resolution of 1920×1080 pixels and a brightness of 500 nits, allowing for comfortable use even in direct sunlight. It also features a compact QWERTY keyboard for easy data entry.

RTK Support and Raw Data Logging

The Y55G field controller enables real-time RTK measurements by receiving corrections via the Internet or radio communication, while simultaneously logging raw satellite data for post-processing. It supports connecting an external geodetic antenna, allowing measurement accuracy of up to < 1 cm.

PPP Corrections Support Without Subscription Fees

The Y55G field controller supports operation in PPP (Precise Point Positioning) mode using free satellite correction services BeiDou B2b and Galileo E6-HAS. This allows improved positioning accuracy without connecting to RTK networks and without additional costs for paid GNSS correction subscriptions.

PPP mode is especially useful in remote areas where mobile internet coverage is unavailable or access to local RTK services is limited. By receiving corrections directly from satellites, the Y55G controller provides stable decimeter-level accuracy, making it an optimal solution for many tasks in agriculture, forestry, territory monitoring, and engineering applications.

As a result, the Y55G combines maximum flexibility: centimeter-level accuracy in RTK mode and high autonomy in PPP mode, without recurring expenses for correction services.

Maximum Capability for Fieldwork

The Y55G controller can operate:

• Through RTK networks of continuously operating GNSS stations by receiving corrections over the Internet (NTRIP);

• in PPP (Precise Point Positioning) mode using free satellite corrections Galileo E6-HAS and BeiDou B2b, providing enhanced positioning accuracy without additional costs.

This makes the Y55G controller an ideal choice for surveyors who demand high accuracy, reliability, and flexibility across various field conditions.